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Trace elements in human nutrition manganese.Report of a who expert committee.Technical report service, 532, who, geneva, switzerland.Manganese is a ubiquitous element that is essential for normal physiologic functioning in all animal species.Several disease states in humans have been associated with both deficiencies and.
We are an innovative enterprise integrating R & D, production, sales and after-sales service. We have more than 60 years of experience in the field of crushing, beneficiation, sand making and building materials. We serve customers in more than 160 countries around the world.